401(k) · DOL Form 5500 · 2023
Ameren Corporation 401(k) Plan
Data updated 2026-08-11
- $3.0B
- Total assets
- 9,356
- Participants
- 100th
- Percentile by assets
- $317,602
- Avg per participant
Official DOL plan name: Ameren Corporation Savings Investment Plan · Sponsored by Ameren Corporation · Missouri · Utilities
$3.0B in assets, 9,356 participants
Ameren Corporation's Ameren Corporation Savings Investment Plan reported $3.0B in total assets and 9,356 participants in its 2023 DOL Form 5500 filing, ranking in the 100th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.
- 100th percentile by assets (of 127,072 plans)
- #686 in Utilities (721 peers)
Coverage in Missouri
Ameren Corporation Savings Investment Plan covers 9,356 participants in Missouri, 13x the typical Missouri plan (state average ~737 per filing). Assets: $3.0B.
- $3.0B
- total plan assets (2023 EOY)
- 9,356
- covered participants
- 100th
- percentile by assets (of 127,072 plans)
- $317,602
- avg assets per participant
Where Ameren Corporation Savings Investment Plan sits by total assets
Ameren Corporation Savings Investment Plan vs every filed plan by assets
End-of-year total assets · plan year 2023 · DOL Form 5500
$2,971,481,023 Top 1% higher than 100% of 127,068 filed plans
Dashed line + filled bar = this entry, among filed plans.
Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023
What changed between DOL Form 5500 filings
plan year 2022 → plan year 2023
- Ameren Corporation Savings Investment Plan reported net income fell from $422M in the plan year 2022 filing to $236M in the plan year 2023 filing.
- Ameren Corporation Savings Investment Plan end-of-year assets rose from $2.7B in the plan year 2022 filing to $3.0B in the plan year 2023 filing.
- Ameren Corporation Savings Investment Plan reported participants rose from 8,851 in the plan year 2022 filing to 9,356 in the plan year 2023 filing.
Participants vs Missouri filers
In Missouri, the average filing covers about 737 participants across 2,297 plans. Ameren Corporation Savings Investment Plan reports 9,356 participants - 13x that state average ($3.0B EOY assets).
Missouri filing particulars
| Total Assets (Beginning of Year) | $2.7B |
|---|---|
| Net Assets (End of Year) | $3.0B |
| Net Income | $236M |
| Employer EIN | 431723446 |
| Plan Effective Date | 1984-07-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Ameren Corporation)
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 3 | 28,238 | $9.9B |
| 2023 | 2 | 19,512 | $7.7B |
| 2024 | 2 | 19,264 | $8.0B |
Nearby 401(k) Plans in Missouri
Peer 401(k) plans, same state, same plan type, ranked by total assets.
Ameren Corporation Savings Investment Plan vs. nearby 401(k) plans in Missouri, assets vs. participants
- Edward D. Jones & Co. Profit Sharing and 401(k) Plan $10.6B · 49,944
- Bayer Corporation Savings and Retirement Plan $10.3B · 19,273
- Enterprise Holdings Retirement Savings Plan $5.6B · 66,210
- Centene Management Corporation Retirement Plan $4.0B · 53,822
- Emerson Electric Company Employee Savings Investment Plan $3.6B · 10,316
Scale composition for Ameren Corporation Savings Investment Plan
Ameren Corporation Savings Investment Plan reports $3.0B in end-of-year assets across 9,356 participants (0.024% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.010% of 93,925,755 covered participants) - about $317,602 per participant (2.3x the national average assets-per-participant) . Net income for plan year 2023 was $236M.
This plan identity (EIN 431723446, plan #003) has 4 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $2.7B to $3.2B (+17.5%) while covered participants moved from 9,307 to 9,504 . Single-year sparse filers cannot show that trail.
| Plan year | Participants | EOY assets | Filing |
|---|---|---|---|
| 2022 | 9,307 | $2.7B | Open filing |
| 2022 | 8,851 | $2.7B | Open filing |
| 2023 | 9,356 | $3.0B | This page |
| 2024 · index core | 9,504 | $3.2B | Open filing |
The same sponsor also keeps 2 other index-core plans on PlainRetire:
- Ameren Retirement Plan (Defined Benefit (Pension), $4.8B, 9,760 participants)
- Ameren Corporation Savings Investment Plan (401(k), $3.2B, 9,504 participants)
Similar-Sized 401(k) Plans Nationally
401(k) plans in other states closest to Ameren Corporation Savings Investment Plan by total assets, not by location.
- Wsp USA Retirement Savings Plan (NY) $3.0B · 16,239
- U.S. Associate Savings Plan (NJ) $3.0B · 14,224
- Iowa Health System Section 401(k) Retirement Savings Plan (IA) $3.0B · 28,959
- Xcel Energy 401(k) Savings Plan (MN) $2.9B · 9,334
Frequently Asked Questions
How did Ameren Corporation Savings Investment Plan assets move in 2023? ▼
How have Ameren Corporation plan assets changed over time? ▼
Where does Ameren Corporation Savings Investment Plan rank by assets among Form 5500 filers? ▼
Which 401(k) plans are similar in size to Ameren Corporation Savings Investment Plan? ▼
Next read for Ameren Corporation Savings Investment Pl…
Filing takeaways
Ways to act on Ameren Corporation Savings Investment Plan's numbers.
- By total assets, Ameren Corporation Savings Investment Plan ranks among the largest 1% of all filed plans. See the largest plans
- Compare it side-by-side against 3 similar 401(k) plans in Missouri. Compare plans
- Ameren Corporation's sponsor-wide assets have declined 19.0% since 2022 across 3 plan years on file. More Utilities plans